solve my java coding file problem and run it

I have a java programming raw file i have added it in eclipse and try to excute as a jar file and to run . after make it jar file it will not work. having problem. its a simple problem but i cant find it out. I am not a developer

Hi,
I am a Java/J2EE developer since last 4 years working in one of the world's biggest MNC IT conpany.
I have experience working on Web Design/Development in AngularJs/jQuery/JSp/Servlet/Spring-Hibernate and Java.
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worked with various IDE like eclipse, myeclips, netbeans, STS and IBM RSA
1) Having more than 6+ years of experience in Information technology spanning various phases of
the Software Development Life Cycle in Java/J2More